These are like modernized tricycles, covered at the top and open at the sides.They are normally a cheaper mode of transportation than a taxi. Fares should be agreed upon before passengers get in as these are not metered and the drivers are known to charge exorbitantly. These should be opted for where only a short distance is to be covered as the bumpy ride you are likely to experience is not very comfortable. Another downside of this is that they are noisy and open to exhaust fumes. However if you want to experience something novel, do opt for a short ride which will cost anywhere between 10-40 Bahts.